Direct Z-scheme CuInS2/Bi2MoO6 heterostructure for enhanced photocatalytic degradation of tetracycline under visible light

Jingru Guo; Liping Wang; Xiao Wei; Zeid A Alothman; Munirah D Albaqami; Victor Malgras; Yusuke Yamauchi; Yunqing Kang; Meiqi Wang; Weisheng Guan; Xingtao Xu

doi:10.1016/j.jhazmat.2021.125591

Direct Z-scheme CuInS₂/Bi₂MoO₆ heterostructure for enhanced photocatalytic degradation of tetracycline under visible light

J Hazard Mater. 2021 Aug 5:415:125591. doi: 10.1016/j.jhazmat.2021.125591. Epub 2021 Mar 5.

Authors

Affiliations

¹ Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710064, PR China.
² Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
³ JST-ERATO Yamauchi Materials Space-Tectonics Project, International Center for Young Researchers (ICYS), and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
⁴ JST-ERATO Yamauchi Materials Space-Tectonics Project, International Center for Young Researchers (ICYS), and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan; Australian Institute for Bioengineering and Nanotechnology (AIBN) and School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia.
⁵ Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710064, PR China. Electronic address: guanweisheng123@163.com.
⁶ JST-ERATO Yamauchi Materials Space-Tectonics Project, International Center for Young Researchers (ICYS), and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. Electronic address: XU.Xingatao@nims.go.jp.

PMID: 33756195
DOI: 10.1016/j.jhazmat.2021.125591

Abstract

The construction of direct Z-scheme heterojunctions with high photocatalytic degradation ability is a theme of importance in both environmental and materials sciences, but still retains many unresolved challenges. In this article, we report the construction of Z-scheme CuInS₂/Bi₂MoO₆ heterostructure by in-situ hydrothermal reactions, demonstrating superior photocatalytic activity towards the degradation of tetracycline under visible light, compared to their individual components: that is to say 8 and 2.5 times those of CuInS₂ and Bi₂MoO₆, respectively. The photocatalytic performance of CuInS₂/Bi₂MoO₆ heterostructure is mainly ascribed to the effective charge transfer at the interface through the construction of a direct Z-scheme heterojunction, combined with a ternary sulfide semiconductor absorbing light in the useful region of the solar spectrum. This photocatalyst provides new insights on the fundamental aspects governing the mechanisms responsible for multicomponent photodegradation, while constituting already a promising candidate for practical environmental applications.

Keywords: CuInS(2)/Bi(2)MoO(6); Direct Z-scheme heterojunction; Photocatalysts; Tetracycline degradation.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Bismuth*
Catalysis
Light
Molybdenum
Tetracycline*

Substances

Bi(2)MoO(6)
Molybdenum
Tetracycline
Bismuth